There is a notice board at the gate of the construction, _______ reads: Keep out without permission.
A. which B. on which C. where D. in which
Completing all the homework by the dinner, John felt very tired. He __________all day long.
A. was studying B. studies C. has studied D. had been studying
Though working outside, he is always ________ about his aging mother at home.
A. satisfied B. concerned C. particular D. excited
-------The weather is terrible now; our earth is badly damaged!
-------Yes. It’s urgent that everyone _________ spare no effort to do something to save our world .
A. must B. would C. should D. shall
Because the writer fell ill all of a sudden, the novel _____________ by the end of next month was put off.
A. being published B. will be published C. to be published D. published
The young dancers looked so charming in their beautiful clothes that we took _________ pictures of them.
A. a good many of B. masses of C. the number of D. a large amount
